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Dynamic averaging of rainfall‐runoff model simulations from complementary model parameterizations
Author(s) -
Oudin Ludovic,
Andréassian Vazken,
Mathevet Thibault,
Perrin Charles,
Michel Claude
Publication year - 2006
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2005wr004636
Subject(s) - streamflow , surface runoff , range (aeronautics) , environmental science , calibration , simulation modeling , index (typography) , computer science , meteorology , mathematics , statistics , engineering , geography , drainage basin , ecology , cartography , mathematical economics , aerospace engineering , biology , world wide web
In this paper, we analyze how our evaluation of the capacity of a rainfall‐runoff model to represent low or high flows depends on the objective function used during the calibration process. We present a method to combine models to produce a more satisfactory streamflow simulation, on the basis of two different parameterizations of the same model. Where we previously had to choose between a more efficient simulation for either high flows or low flows (but inevitably less efficient in the other range), we show that a balanced simulation can be obtained by using a seasonal index to weigh the two simulations, providing good efficiency in both low and high flows.